Waveguides (saluran transmisi dapat digunakan untuk memandu EM energi dari satu titik (generator) yang lain (beban))

         As mentioned in the preceding chapter, a transmission line can be used to guide EM
energy from one point (generator) to another (load). A waveguide is another means of
achieving the same goal. However, a waveguide differs from a transmission line in some
respects, although we may regard the latter as a special case of the former. In the first
place, a transmission line can support only a transverse electromagnetic (TEM) wave,
whereas a waveguide can support many possible field configurations. Second, at microwave
frequencies (roughly 3-300 GHz), transmission lines become inefficient due to
skin effect and dielectric losses; waveguides are used at that range of frequencies to obtain
larger bandwidth and lower signal attenuation. Moreover, a transmission line may operate
from dc ( / = 0) to a very high frequency; a waveguide can operate only above a certain
frequency called the cutoff frequency and therefore acts as a high-pass filter. Thus, waveguides
cannot transmit dc, and they become excessively large at frequencies below microwave
frequencies.

Bab 12 Waveguides (saluran transmisi dapat digunakan untuk memandu EM energi dari satu titik (generator) yang lain (beban)) 3rd element sadiku (buku berbahasa inggris, dilengkapi contoh (soal+pembahasan )

Silahkan unduh, download